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OleMash [197]
3 years ago
11

Which radioactive isotopes did the Curies discover?

Chemistry
2 answers:
Sergio [31]3 years ago
7 0
The answer is 1 polonium and radium
belka [17]3 years ago
6 0

Answer:

polonium and radium

Explanation:

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NEED ANSWER FAST✴️✴️✴️✴️
svp [43]

Answer:

B is the answer

Explanation:

3 0
3 years ago
PLEASE HELP!!!
malfutka [58]
The answer would be d
5 0
4 years ago
Name four products of incomplete combustion<br><br> Which four?
Y_Kistochka [10]

Answer:

1. Carbon Monoxide

2.Water

3. sulfuric acid

4.sulfur dioxide

Explanation:

If my answer helped please rate

8 0
4 years ago
Please help. it’s my last question.
ale4655 [162]
<h3>Further explanation </h3>

Given

Atomic symbol

Required

Atomic composition

Solution

Atomic number = number of protons = number of electrons

Mass Number (A) is the sum of protons and neutrons

Number of protons and Number of Neutrons  in nucleus

Number of electrons in the shell

From the picture:

protons = 3

neutrons = 4

electrons = 3

atomic number = protons = electrons = 3

mass number = protons + neutrons = 3+4 = 7

4 0
3 years ago
A chemical reaction takes place in a closed system. The mass of the reactants before the reaction was 35 grams. What must the ma
Reil [10]
The chemical rehearsal is founded by the national association of university or education defines as mathematical.
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3 years ago
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